18 DOUBLE MAGNET

Technical Specifications

1. Driver Size:
   • 18 inches (457 mm), a large diaphragm size suited for reproducing low-frequency sounds (bass). This makes it ideal for subwoofers.
2. Double Magnet Design:
   • Dual magnet structure increases the strength of the magnetic field, which helps improve the speaker’s efficiency, sensitivity, and overall sound pressure level (SPL). This means you get more output with the same power input.
3. Power Handling:
   • RMS Power: Typically, these speakers handle 600W to 1000W RMS (root mean square). This is the continuous power the speaker can handle without being damaged.
   • Peak Power: These speakers often handle 2000W to 4000W peak power, which indicates short bursts of power handling for sudden loud sounds.
4. Voice Coil:
   • Usually features a 3-inch to 4-inch voice coil. Larger voice coils can handle more heat, allowing for higher power handling.
   • Copper or aluminum material is typically used for the voice coil to improve efficiency and heat dissipation.
5. Impedance:
   • Commonly available in 4 ohms or 8 ohms impedance. This affects how much current is drawn from the amplifier, and higher impedance generally results in lower power consumption.
6. Frequency Response:
   • Typically ranges from 30 Hz to 2 kHz. It is primarily designed to handle the low end of the spectrum, though the upper range can reach into the mid frequencies.
7. Sensitivity:
   • Sensitivity ratings usually range from 95 dB to 100 dB at 1W/1m, meaning the speaker can produce loud sound even with low power input.
8. Magnet Material:
   • Uses ferrite or sometimes neodymium for the magnets. Neodymium is lighter and more powerful, but ferrite magnets are more commonly used in large drivers like 18-inch speakers due to cost and availability.